||Ship|Shipyard|Laid down|Launched|Completed|Fate|
|---|---|---|---|---|---|---|
|白露|Shiratsuyu|Sasebo Naval Arsenal|14 November 1933|5 April 1935|20 August 1936|Collision 15 June 1944|
|時雨|Shigure|Uraga Dock Company|9 December 1933|18 May 1935|7 September 1936|Sunk in action 24 January 1945|
|村雨|Murasame|Fujinagata Shipyards|1 February 1934|20 June 1935|7 January 1937|Sunk in action, 6 March 1943|
|夕立|Yudachi|Sasebo Naval Arsenal|16 October 1934|21 June 1936|7 January 1937|Sunk in action 13 November 1942|
|五月雨|Samidare|Uraga Dock Company|19 December 1934|6 July 1935|29 January 1937|Sunk in action 26 August 1944|
|春雨|Harusame|Uraga Dock Company|3 February 1935|21 September 1935|26 August 1937|Sunk in action 8 June 1944|
|山風|Yamakaze|Uraga Dock Company|25 May 1935|21 February 1936|30 June 1937|Sunk in action 23 June 1942|
|江風|Kawakaze|Fujinagata Shipyards|25 April 1935|1 November 1936|30 April 1937|Sunk in action 6 August 1943|
|海風|Umikaze|Maizuru Naval Arsenal|4 May 1935|27 November 1936|31 May 1937|Sunk in action 1 February 1944|
|涼風|Suzukaze|Uraga Dock Company|9 July 1935|11 March 1937|31 August 1937|Sunk in action 25 January 1944|

Question: how many of the shiratsuyu-class ships sank in 1944?
Answer: 4